ONOS-5552 DocumentTree builder not available

Change-Id: Id0e9e0c647146c27e21e2ec2b2014789bbd9eca9
diff --git a/core/store/primitives/src/main/java/org/onosproject/store/primitives/impl/DefaultDocumentTreeBuilder.java b/core/store/primitives/src/main/java/org/onosproject/store/primitives/impl/DefaultDocumentTreeBuilder.java
new file mode 100644
index 0000000..8d21e60
--- /dev/null
+++ b/core/store/primitives/src/main/java/org/onosproject/store/primitives/impl/DefaultDocumentTreeBuilder.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.store.primitives.impl;
+
+import org.onosproject.store.primitives.DistributedPrimitiveCreator;
+import org.onosproject.store.service.AsyncDocumentTree;
+import org.onosproject.store.service.DocumentTreeBuilder;
+
+/**
+ * Default {@link AsyncDocumentTree} builder.
+ *
+ * @param <V> type for document tree value
+ */
+public class DefaultDocumentTreeBuilder<V> extends DocumentTreeBuilder<V> {
+
+    private final DistributedPrimitiveCreator primitiveCreator;
+
+    public DefaultDocumentTreeBuilder(DistributedPrimitiveCreator primitiveCreator) {
+        this.primitiveCreator = primitiveCreator;
+    }
+
+    @Override
+    public AsyncDocumentTree<V> buildDocumentTree() {
+        return primitiveCreator.newAsyncDocumentTree(name(), serializer());
+    }
+
+    //TODO
+    /*
+     public ConsistentDocumentTree<V> build() {
+        return buildDocumentTree().asDocumentTree();
+    }
+    }*/
+    //writing a dummy implementation till we have ConsistentDocumentTree.
+    @Deprecated
+    @Override
+    public AsyncDocumentTree<V> build() {
+        return primitiveCreator.newAsyncDocumentTree(name(), serializer());
+    }
+}
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